diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 6316b728..22b9d00b 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -48,7 +48,7 @@ extern void irq15(void);
  * This array is actually an array of function pointers. We use
  * this to handle custom IRQ handlers for a given IRQ
  */
-static void *irq_routines[16] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+static void *irq_routines[16] = {[0 ... 15] = NULL };
 
 /* This installs a custom IRQ handler for the given IRQ */
 void irq_install_handler(unsigned int irq, irq_handler_t handler)